Come with 2000mAh battery and 1 fast charger, which can improve your work efficiency.; Machine body lock-off switch to prevent unintentional starting, that will make your work safer.; Build-in bright LED light ensure that you can work in a dark environment; battery indicator for electricity monitoring.; Max torque 40ft·lb motor, speed change trigger adjust the speed from 0 to 280 rpm, which make it suitable for more applications.; Compact head design for use in tight spaces, and with electrical brake protection that quick stops to prevent excessive tightening, saving more time and reducing the reaction force.